The gongs are made of brass alloy or a mixture of brass and gold, silver, bronze. Their diameter is from 20cm to 60cm or from 90cm to 120cm. A set of gongs consists of 2 to 12 or 13 units and even to 18 or 20 units in some places.

Ca Tru is unique with its private art performing space, musical instruments and distinct style of poetry. According to folk artists, Ca Tru has 56 different musical forms or melodies, each of which is called the cach

Cham towers and temples are built of bricks associated with sandstone decorations. It is quite noteworthy that no adhesive can be seen in between the bricks, which is amazing since some of the works have survived thousands of years.

Quan ho folk songs are always performed voluntarily in groups of male (bon nam) or female (bon nu). Each group usually has four to six people who are named by order such as “Second Sister”, “Third Sister”, “Fourth Sister”, or “Second Brother”, “Third Brother”, “Fourth Brother” and so on

In 1009, Ly Cong Uan was enthroned, founded Ly Dynasty. In July, 1010, the king promulgated Chieu Doi Do (the royal decree) to change the capital city from Hoa Lu (Ninh Binh) to Dai La Citadel. After transferring the capital city, Ly Cong Uan had Citadel of Thang Long built and the citadel construction was finished in early 1011

The citadel of the Ho Dynasty is considered as the only stone citadel remaining in Southeast Asia and is one of the few remains in the world.

The festival vividly imitates the evolution of fights of Saint Giong and Van Lang people under the 6th King Hung reign in combating against the foreign enemies

Xoan singing has existed for more than 2,000 years since Hung Kings dynasty

According to legend, Lac Long Quan – son of Kinh Duong Vuong Loc Tuc got married with Au Co – daughter of King De Lai and gave birth to 100 sons. After that, 50 sons followed Au Co and 50 others followed Lac Long Quan to settle. The first son followed his mother to arrived in Phong Chau Land (now Phu Tho Province) and established Van Lang Nation and became King Hung

The woodblocks at Vinh Nghiem Pagoda show the formation, development and ideology of Truc Lam Zen Buddhism, at the same time also mark the development of Nom writing system through the periods.